When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
I bought a bed cover, have been trying to buy one for a while and finally had the time to look into it. I have seen arguments pro and con on the issue of better mpg with a solid bed cover, so I did my own brief test. I have found an increase of 1.5 mpg over 2 trips averaging 4 fillups per trip.
The manufacturer included a flyer touting the fact that the cover will pay for itself in better fuel mileage over time. While I didn't take that seriously initially, I am starting to consider it a possibility. If my results continue, it would pay for itself in a year basically.
The bottom line is I needed the bed cover, so I have met that goal, if I get better fuel mileage, even better.
Herd the same thing. IMO anything aftermarket promisses a add in MPG. Kinda stopped taking them seriously a long time. But hey of your getting 1.5MPG better then hey, they told the truth.
Try to find the Myth Busters episode they did on this subject, I think they found no difference in milage.
They actually did 2 separate tests... They were flooded with mail after the first test and then they did a "myth revisited" episode. Their test was with a chev gas pick-up with 4 different variables:
1) Tailgate up
2) Tailgate down
3) Bed cover
4) Mesh net (no tailgate)
Their results indicated the best mileage was the stock tailgate removed and with a mesh net tailgate. I'm of the opinion a diesel powered vehicle would probably have different results. I have found with my tailgate down my highway mpg increases about .6 mpg although it looks (bad) like I accidentally left the tailgate down.
I think Myth busters should have included a mpg test without a windshield
Thanks for the replies. I am trying to eliminate my driving as a factor, some of these 2 trips were more heavily weighted through lower speed limit areas, going 70ish rather than 80ish. I will update as I get more data.
I've been hesitant on getting one. The only problem is I have a transfer tank. They have the ones that fold into sections but they fold from the tailgate back. Maybe I could put it on backwards?
I don't like the looks of them, so that solves it for me. As to the debate whether they help or not, it depends on a lot of factors including length of cab and length of box. Trucks with shorter cabs and longer boxes tend to benefit whereas longer cabs which shorter boxes don't because the pocket of air behind the cab fills the entire bed area.
I have backup sensors, so if I try leaving my tailgate down it annoys the s*** out of me
I have a tool box in the bed of mine...so that kinda shoots the idea in the buttocks.
I've gotten (recently) a PM from one of the sponsors claiming their cover will pay for itself in fuel savings too.
Joe
Most everyone sells tonneau covers that will fit with a toolbox the problem I have is that they only make them for like 18"+ boxes my transfer tank is only like 8"
I installed a Diamondback cover 2 months after purchasing the truck. The cover is still on the truck as we speak.
I have noticed no fuel mileage increase.
For most of 2006 I did not have the cover on the truck due to broken hinges. The cover was placed on the truck once the hinges were replaced by Diamondback in October 2006.
No mileage change noticed with or without the cover.
Still getting 1.5 mpg better fuel mileage. I will keep posting updates to this, I figure if this keeps up, the cover will pay for itself in 2 years. To me, considerable savings, and it is nice having the cover on. When I have to load something, I just fold it back, no problem.